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T640 Power System Description

 

The router supports two load-sharing DC power supplies, located at the lower rear of the chassis. The power supplies connect to the midplane, which distributes different output voltages produced by the power supply to the router components, depending on voltage requirements.

The T640 router supports the DC power supplies in Table 1.

Note

Mixing power supplies with a different number of inputs in the same router is supported only during upgrade. Mixing different types of power supplies is not supported during normal operations.

Table 1: Supported Power Supplies

Name

Model Number

First Supported Junos OS Release

Two-input 160-A DC power supply (EOL PSN-2010-01-644)

See the T640 Two-Input 160-A DC Power Supply Description.

PWR-T-DC

5.3

Three-input 240-A DC power supply

See the T640 Three-Input 240-A DC Power Supply Description.

Note: For the T640 router, this power supply is supported only in 2-INPUT mode.

PWR-T1600-3-80-DC

8.5

Four-input 240-A DC power supply

See the T640 Four-Input 240-A DC Power Supply Description..

PWR-T1600-4-60-DC

10.0

Six-input DC power supply

See the T640 Six-Input DC Power Supply Description..

PWR-T-6-60-DC

12.1